Manifold-heater



' A. Q. MUELLER AND W. H. KOELLER.' MANIFOLD HEATER. APPLICATION man 050.29. 1920.

Patented'Dec. 13, 1 921.

I and manifold that the manifold may be- 1 UNITED srAT s AT F 0 AUGUST o. MUELLER AND WALTER H. KOELLER, or IVIILWAUKEE, wlsoonsm.

' MANIFOLD-HEATER.

Specification of Letters Patent. Patented D 1921 Application filed. December 29, 1920.- Serial no; 433,789.

To all whom it may concern:

Be it known that we, AUGUsT Q. MUELLER and /VALTER H. KOELLER, citizens of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Manifold-Heaters, of which the following is a specification.

This invention relates to manifold heaters for lnternal combustion engines.

Objects of this invention are to provide a manifold heater which .may be readily placed about the vertical portion Ofthe manifold; to provide a heater having a'fire container in the lower portion thereof so related to the vertical portion of the manifold that the heated gases generated duringcombustion may pass upwardly about suchmanifold, and quickly raise the temperature thereof to the desired extent; and to provide a manifold heater adapted to receive solid fuel, such, for example, as solidified alcohol, cardboard impregnated with saltpeter, or other similar prepared fuels.

Further-objects of this invention are to frictionally engage the manifold at one point toproperly position the heater, and at another point to positively engage and look upon a portion of the manifold; and toform these stampings of thin, lightweight mate'- rial, thereby materially reducing the weight and correspondingly preventing rattling, as the momentum acquired during vibratory motions is extremelyfslight.

Further objects are to so relate a heater quickly heated even in the coldest weather to a temperature s'uficient to insure 1 the ready starting of the motor; andto so proportion and' arrange the parts that'solid fuel of a predetermined heat generating value may be used, thereby avoiding an uncontrolled flame or an excessive generation of heat. H

Embodiments of the invention are shown in the accompanying drawings, in which Figure 1 is an elevation showing the manifold of an internal combustion engine with the heater applied thereto, parts being broken away for clearness.

Fig. v 4

Fig. 3 is a view of the blank from which thejmajor portion of the heater is formed.

- Fig. lis a view of the blank the fire pot is formed. Fig. 5 is a fragmentary View corresponding to Fig. 1 and showing a further form of the invention. I I I The manifold has the usual. horizontally Fli Ea is a section on the'line 2-2 from which p extending Portion a the tical Po tion 2,

and the laterally extending neck portion 3,; at which latter point, the carburetor is usually attached- About this vertical jportion, the heater is positioned, suchheater" comprising a main casing t formed from sheet material andwound about the verticajli port on. It .is provided at its'upper edges with" inwardly directed prongs 5 which resihently engage thevertical portion 2 of the manifold. It is further provided with an opening 6 through which the neck portion 3 of the manifold extends. portion of the casing is closed by a fire pot or container 7 which is cup-shaped and is provided with a heat insulating lining 8.

The lower This cup-shaped portion is equipped with downwardly projectingtongues 9 which engage over theedges of the heat insulating lining and retain such lining in position. The bottom portion of the casing is provided with inwardly directed tongues 10 which support the cup in position within the casing and is further provided with inwardlyv struck tongues 11 which engage the upper edge of the cup, and together with the lower tongues 10, securely position the cup within the casing. The lower portion'of the casing 4 1s provided with an opening 12 through which solid material may be inserted and through which the igniting match may be passed.

In the operation of the device, solidfuel, such as solidified alcohol, cardboard impreg nated' with saltpeter, or any other similar preparedfuel may be inserted through the l i opening 12. This solidifiedfuel is'then ignited and the hot gases from the resulting combustion will pass upwardly around the vertical portion 2 of the manifold and rapidly raise its temperature to the required degree. I I

This manifold heater may be readily formed from stampings, such for example,

as shown in Figs. 8 and 4:. The blank from which the vertical casing 42 is formed is sub- .stantially rectangular in outline and is provided at one end with a plurality of outwardly projecting tongues 13 and adjacent the other end with upwardly pressed tongues 14 which together cooperate to look the casing in its rounded form about the manifold; A roundednotch 15 is providedadjacent each vertical edge of the blank and such notches together cooperate to lock about the laterall extending neck portion 3 of the manifo d. The tongues 55, 10, 11 and 14 may be readily formed during the stamping operation. The blank 7 from which the fire pot is "formed may also'be stamped witha plurality of outwardly projecting tongues 9 which may readily be formed at one operation. V

*Fig. 5 discloses a modified form'of the invention in which a single casing member 16' is employed. In this form, tonguesl7 correspond to the'tongues 5 and resiliently engage the vertical portion 1 of the manifold and a pair of notches form an opening 18 corresponding to the opening 6 which lock about the laterally extending neck 3 manifold' This casing is formed from a blank in the same manner as the casing previously described and is provided with interlocking tongues 19 and 20 and inwardly directed lower tongues 21 which latter partially close the bottom of the casing, Solid fuel, such as cardboard impregnated with saltpeter, for instance, or other prepared fuels of this type may be inserted through an o enin 22 and ma rest upon the in- P a: y

, wardlyprojecting tongues 21. This fuel is ignited and the heated gases pass upwardly around the vertical portion 2 of'the manifold quickly raising its temperature to the desired Yextent Obviously the resulting ash may eventually be discharged through the bottom of the casing between the in: V wardly projecting tongues 21.

We claim 1. In. combination an internal combustion engine manifold, a heater therefor, comprising/ac casing encircling the vertical portion of'the manifold and spaced therefrom, re-

' "silient means for supporting the upper end offthejheater in spaced relation tothe manifold and engaging the manifold at aplurality of .points' completely around its periphery while allowing the gases'of combustion to pass between such spaced means,

and a bottom cup-shaped portion closing the lower end of the casing. v

2. In combination, an internal combustion engines manifold having a vertical portion "and a laterally extending neck in communiof the cation therewith, and a heater for said manifold comprising a casing formed from flat sheet material woundabout said manifold and positively lockingabout said neck portion,"and means for supporting the upper] end of the heater from the manifold at intervals 'to hold it in spaced'relation thereto while allowing the gases of combustion to escape on all sides, said heater having a bot-' andalaterally extending portion forming an elbow joint therewith, said heater comprising a cas ng formed of stamped thin sheet material and adapted to be wound about said vertical portion, interengaging V securing means formed integrally with said casing and upon opposite sides of the meeting edges thereof, and a pan portionforniedof stamped sheet material positioned within the lower portion of saidcasing, said casing having inwardly projecting tongues engag ing and supporting said pan portion.

5. A heater for an internal combustion engines manifold having a vertical port on and 'a'laterally extending neck, said heater 7 comprising a casing formed of sheet material having notched edgesadapted to be positioned about said vertical portion with the notches in engagement'with said neck, and a pan-shaped bottom portion positioned within and closing the lower end of said casing. 1 r

6. A heater for an internal combustion engines manifold-having a vertical portion and a laterally extending-neck, comprising a casing formed of sheet mate rial having notched edges adapted 'to be positioned about said vertical portion with the notches in engagement with said neck,

said heater a pan-shaped bottom portion positioned within and closing the lower end of said casing, and a heat insulating lining for said" bottom portlon.

AUGUST QMUELLER, WALTER H. xoELLEn, 

